Driving mechanism

ABSTRACT

A driving mechanism is provided, including a fixed part, a movable part for holding an optical element, and a driving assembly. The movable part is movable relative to the fixed part, and the driving assembly is configured to drive the movable part to move relative to the fixed part. Light reaches the optical element along an incident direction and leaves the optical element along an exit direction, wherein the exit direction is not parallel to the incident direction.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority of provisional U.S. Patent ApplicationSer. No. 62/894,295, filed on Aug. 30, 2019, and European PatentApplication No. 19218906.6 filed Dec. 20, 2019, the entirety of whichare incorporated by reference herein.

BACKGROUND OF THE INVENTION Field of the Invention

The application relates in general to a driving mechanism, and inparticular, to a driving mechanism for moving an optical element.

Description of the Related Art

With the progress being made in 3D sensing technologies, Advanced DriverAssistance Systems (ADAS) have been installed in modern vehicles. Forexample, Advanced Driver Assistance Systems (ADAS) may have suchfunctions as real-time 3D object detection, large-scale 3D vehicledetection, and 3D object recognition.

Conventional 3D sensing technologies may be implemented by applyinglight detection and ranging (LiDAR), infrared detection, or ultrasounddetection. However, to improve the efficiency and reduce the sizes ofconventional 3D sensing devices become a challenge. Moreover, sincevarious optical sensing technologies have been applied to the field ofpoint-of-care testing (POCT), it has also become a challenge to improvethe efficiency and achieve miniaturization of the optical sensingsystems.

BRIEF SUMMARY OF INVENTION

In view of the aforementioned problems, the object of the invention isto provide a driving mechanism that includes that includes a fixed part,a movable part for holding an optical element, and a driving assembly.The movable part is movable relative to the fixed part, and the drivingassembly is configured to drive the movable part to move relative to thefixed part. Light reaches the optical element along an incidentdirection and leaves the optical element along an exit direction,wherein the exit direction is not parallel to the incident direction.

BRIEF DESCRIPTION OF DRAWINGS

The invention can be more fully understood by reading the subsequentdetailed description and examples with references made to theaccompanying drawings, wherein:

FIG. 1 is an exploded diagram of a driving mechanism in accordance withan embodiment of the invention.

FIG. 2 is a perspective diagram of the driving mechanism in FIG. 1 afterassembly.

FIG. 3 is a perspective diagram showing an optical system in the drivingmechanism of FIGS. 1 and 2.

FIG. 4 is an exploded diagram of the spring sheet S, the optical elementR1, and the mirror R2 in FIG. 3.

FIG. 5 is a top view of the spring sheet S, the magnets M, and themagnetic permeable sheets Q in FIGS. 1 and 2.

FIG. 6 is a bottom view of the spring sheet S, the magnets M, and themagnetic permeable sheets Q in FIGS. 1 and 2.

FIGS. 7 and 8 are exploded and perspective diagrams of a spring sheet S,an optical element R1, a mirror R2, two coils W, and a bobbin N, inaccordance with another embodiment of the invention.

FIG. 9 is a perspective diagram that shows the coils W in FIG. 8electrically connecting to the circuits E3 on the spring sheet S.

FIG. 10 is a perspective diagram of an optical system in accordance withanother embodiment of the invention.

FIGS. 11 and 12 are exploded and perspective diagrams of a light emitterD3, a light receiver D4, and a substrate I disposed on a spring sheet S,in accordance with another embodiment of the invention.

FIG. 13 is a perspective diagram of an optical system in accordance withanother embodiment of the invention.

FIG. 14 is an exploded diagram of a spring sheet S, a coil W, andseveral magnets MX and MY, in accordance with another embodiment of theinvention.

FIG. 15 is a perspective diagram showing the spring sheet S, the coil W,and the magnets MX and MY in FIG. 14 assembled to a fixed member H.

FIG. 16 is a perspective diagram showing the relative positions of thespring sheet S and the magnets MX and MY in FIG. 15.

FIG. 17 is a perspective diagram showing the relative positions of aspring sheet S, at least one coil W, and several magnets M, inaccordance with another embodiment of the invention.

FIG. 18 is a perspective diagram of a driving mechanism in accordancewith an embodiment of the invention.

FIG. 19 is a perspective diagram of the two spring sheets S in FIG. 18.

FIG. 20 is a perspective diagram of a spring sheet S in accordance withanother embodiment of the invention.

FIG. 21 is a partial sectional view showing a coil Y21 and a circuit Y31formed on the same side of the spring sheet S.

FIG. 22 is a partial sectional view showing a coil Y21 and a circuit Y31formed on the opposite sides of the spring sheet S.

FIGS. 23 and 24 are partial perspective view and top view of a drivingmechanism in accordance with another embodiment of the invention.

FIG. 25 is a perspective diagram of a cover T in accordance with anotherembodiment of the invention.

FIG. 26 is a partial sectional view of the cover T in FIG. 25, a fixedmember H connected to the cover T, and two magnets M received in thecover T after assembly.

FIG. 27 is a perspective diagram of an optical sensing system inaccordance with an embodiment of the invention.

FIG. 28 is a perspective diagram of the optical module SM that changesthe propagation direction of the sensing light L1 in FIG. 27.

FIG. 29 is a perspective diagram of the sensing light L1 reflected bythe optical element R1 to the object O while the light path adjustingelement PR rotates around the second axis A2.

FIG. 30 is a perspective diagram showing the optical element R1continuously rotates around the first axis A1 back and forth within afirst range RA1, and the light path adjusting element PR rotates aroundthe second axis A2 within a second range RA2 in a stepwise manner.

FIG. 31 is a perspective diagram of an upper module of a drivingmechanism in accordance with an embodiment of the invention.

FIG. 32 is an exploded diagram of the spring sheet S, the coils W, andthe bobbin N in FIG. 31.

FIG. 33 is a perspective diagram of sensing module U and an analyzingdevice V.

FIG. 34 is a perspective diagram showing the sensing module U whenconnected to the analyzing device V.

FIG. 35 is a perspective diagram of an optical sensing system inaccordance with an embodiment of the invention.

FIG. 36 is a perspective diagram of an optical sensing system inaccordance with another embodiment of the invention.

FIG. 37 is a perspective diagram of an optical sensing system inaccordance with another embodiment of the invention.

FIG. 38 is a perspective diagram showing the sensing light L propagatesfrom the light emitter D5 through the sensing module U to the lightreceiver D6.

FIG. 39 is a perspective diagram showing the light emitter D5 isrotatable relative to the sensing module U.

FIG. 40 is a perspective diagram showing the light emitter D5 and thelight receiver D6 are both rotatable relative to the sensing module U.

FIG. 41 is a perspective diagram showing the light emitter D5 and thesensing module U are rotatable relative to the light receiver D6.

FIG. 42 is a perspective diagram showing the light receiver D6 and thesensing module U are rotatable relative to the light emitter D5.

FIG. 43 is a perspective diagram showing the first light path adjustingelement RM1 is rotatable relative to the sensing module U.

FIG. 44 is a perspective diagram showing the first and second light pathadjusting elements RM1 and RM2 are both rotatable relative to thesensing module U.

FIG. 45 is a schematic diagram of an optical member driving mechanismaccording to an embodiment of the invention;

FIG. 46 is an exploded-view diagram of the optical member drivingmechanism according to an embodiment of the invention;

FIG. 47 is a cross-sectional view along the line A-A in FIG. 45;

FIG. 48 is a schematic diagram of an optical member driving mechanismaccording to another embodiment of the invention;

FIG. 49 is a schematic diagram of an optical member driving mechanismaccording to another embodiment of the invention;

FIG. 50 is a schematic diagram of a light emitter, a light receiver, anda movable portion according to another embodiment of the invention;

FIG. 51 is a cross-sectional view along the line B-B in FIG. 50;

FIG. 52 is a schematic diagram of an optical member driving mechanismaccording to another embodiment of the invention;

FIG. 53 is a schematic diagram of an optical member driving mechanismaccording to another embodiment of the invention;

FIG. 54 is a schematic diagram of an optical member driving mechanismaccording to another embodiment of the invention;

FIG. 55 is a schematic diagram of an optical member driving mechanismaccording to another embodiment of the invention;

FIG. 56 is a schematic diagram of a rotation module, a reflectingmember, and a light path adjusting member according to anotherembodiment of the invention; and

FIG. 57 is a schematic diagram of a rotation module and a reflectingmember according to another embodiment of the invention.

DETAILED DESCRIPTION OF INVENTION

The making and using of the embodiments of the driving mechanism arediscussed in detail below. It should be appreciated, however, that theembodiments provide many applicable inventive concepts that can beembodied in a wide variety of specific contexts. The specificembodiments discussed are merely illustrative of specific ways to makeand use the embodiments, and do not limit the scope of the disclosure.

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood by one of ordinary skill inthe art to which this invention belongs. It should be appreciated thateach term, which is defined in a commonly used dictionary, should beinterpreted as having a meaning conforming to the relative skills andthe background or the context of the present disclosure, and should notbe interpreted in an idealized or overly formal manner unless definedotherwise.

In the following detailed description of the preferred embodiments,reference is made to the accompanying drawings, and in which specificembodiments of which the invention may be practiced are shown by way ofillustration. In this regard, directional terminology, such as “top,”“bottom,” “left,” “right,” “front,” “back,” etc., is used with referenceto the orientation of the figures being described. The components of thepresent invention can be positioned in a number of differentorientations. As such, the directional terminology is used for thepurposes of illustration and is in no way limiting.

Referring to FIGS. 1-4, FIG. 1 is an exploded diagram of a drivingmechanism in accordance with an embodiment of the invention, FIG. 2 is aperspective diagram of the driving mechanism in FIG. 1 after assembly,FIG. 3 is a perspective diagram showing an optical system in the drivingmechanism of FIGS. 1 and 2, and FIG. 4 is an exploded diagram of thespring sheet S, the optical element R1, and the mirror R2 in FIG. 3.

As shown in FIGS. 1 and 2, the driving mechanism in this embodiment isused to drive an optical element R1 (e.g. reflecting mirror) to rotateback and forth within a range, wherein the optical element R1 canreflect light to an object for the purpose of depth sensing or 3Dscanning.

The driving mechanism includes an upper module and a lower module. Thelower module primarily comprises a base B, a light emitter D1 disposedon the base B, a light path adjusting element P, a circuit board C, anda light receiver D2 disposed on the circuit board C. The upper moduleprimarily comprises a fixed member H, a spring sheet S, two magnets M,and two magnetic permeable sheets Q. The fixed member H is secured onthe base B, and the spring sheet S, the magnets M, and the magneticpermeable sheets Q are disposed on the fixed member H. Here, the fixedmember H and the base B constitute a fixed part of the drivingmechanism. The optical element R1 is disposed on a stage S3 of thespring sheet S, and they can rotate relative to the fixed member H toperform rapid depth sensing or 3D scanning of an object.

The spring sheet S is used as a movable part of the driving mechanism,and it has two fixed ends S1 affixed to the fixed member H, twodeformable portions S2, and a stage S3. The optical element R1 isdisposed on the top side of the stage S3, and the deformable portions S2respectively connecting the fixed ends S1 to the stage S3.

Specifically, a mirror R2 and at least one coil E2 are disposed on thebottom side of the stage S3 (FIG. 3). When an external circuit applies acurrent signal to the coil E2 via the circuit E1 on the spring sheet S,the magnet M and the coil E2 (driving assembly) can generate a magneticforce to rotate the stage S3 around a long axis A (first axis) of thespring sheet S.

As shown in FIG. 3, when an external light source (not shown) emits asensing light L1 to the optical element R1 on the stage S3, the opticalelement R1 reflects the sensing light L1 to an object for depth sensingor 3D scanning. Additionally, the light emitter D1 in the lower moduleof the driving mechanism can emit another sensing light L2 to the lightpath adjusting element P (e.g. prism). The light path adjusting elementP can guide the sensing light L2 to the mirror R2 on the bottom side ofthe stage S3, and the mirror R2 reflects the sensing light L2 to thelight receiver D2, so as to obtain posture angle information of theoptical element R1 relative to the fixed member H. When the lightreceiver D2 receives the sensing light L2 that is reflected by themirror R2, it can transmit an electrical signal to a processor via thecircuit board C, whereby closed-loop rotational control for the stage S3of the spring sheet S and the optical element R1 can be performed.

In some embodiments, the mirror R2 may be omitted from the drivingmechanism, and the bottom surface of the stage S3 may be smooth orpolished to reflect the sensing light L2. In some embodiments, a throughhole may be formed on the stage S3 for receiving the optical element R1(e.g. double-sided mirror) without the mirror R2.

It should be noticed that the spring sheet S in this embodiment has afirst resonance frequency with respect to the fixed part (the fixedmember H and the base B), and an AC current signal can be applied to thecoil E2 on the stage S3, wherein the frequency of the AC current signalcorresponds to the first resonance frequency. Thus, the stage S3 can bedriven to rapidly rotate back and forth within a range around the longaxis A of the spring sheet S for depth sensing or 3D scanning of anobject. For example, the first resonance frequency is about 300-1000 Hz,and the frequency of the AC current signal is about 0.9 to 1.1 times thefirst resonance frequency, so that the rotational angle of the stage S3and the scanning range of the sensing light L1 can be increased.

FIG. 5 is a top view of the spring sheet S, the magnets M, and themagnetic permeable sheets Q in FIGS. 1 and 2, and FIG. 6 is a bottomview of the spring sheet S, the magnets M, and the magnetic permeablesheets Q in FIGS. 1 and 2. As shown in FIGS. 5 and 6, the spring sheet Smay comprise metal and have a rectangular structure. The magnets M andthe magnetic permeable sheets Q are arranged on two long sides of thespring sheet S, and the circuit E1 and the coil E2 are respectivelyformed on the top and bottom sides of the spring sheet S by metallicprinting ink or circuit-on-metal technology. In some embodiments, thespring sheet S may comprise SUS 304H stainless steel that has highmechanical strength and reliability.

As mentioned above, the circuit E1 and the coil E2 can be integrallyformed on the top and bottom sides of the spring sheet S, wherein aninsulating layer is formed between the circuit E1 and the spring sheetS, and another insulating layer is formed between the coil E2 and thespring sheet S. The circuit E1 and the coil E2 can be electricallyconnected to each other via the stage S3 of the spring sheet S. When anexternal circuit applies a current signal to the coil E2 on the bottomside of the spring sheet S via the circuit E1, the magnet M and the coilE2 can produce a magnetic force to rotate the stage S3 around the longaxis A of the spring sheet S, so as to perform depth sensing or 3Dscanning of an object.

Specifically, the circuit E1 and the coil E2 in FIGS. 5-6 both have atleast one segment parallel to the long axis A (first axis), and thesegment at least partially overlaps the long axis A when viewed alongthe Z direction that is perpendicular to the spring sheet S. In someembodiments, the circuit E1 and the coil E2 may also have a plurality ofsegments that are parallel to but do not overlap the long axis A whenviewed along the Z direction.

FIGS. 7 and 8 are exploded and perspective diagrams of a spring sheet S,an optical element R1, a mirror R2, two coils W, and a bobbin N, inaccordance with another embodiment of the invention. FIG. 9 is aperspective diagram that shows the coils W in FIG. 8 electricallyconnecting to the circuits E3 on the spring sheet S. FIG. 10 is aperspective diagram of an optical system in accordance with anotherembodiment of the invention.

As shown in FIGS. 7-10, this embodiment is different from FIGS. 1-6 inthat a plurality of circuits E3 are integrally formed on the bottom sideof the spring sheet S by metallic printing ink or circuit-on-metaltechnology, wherein an insulating layer is formed between the circuitsE3 and the spring sheet S to prevent a short circuit therebetween.

The two coils W in FIGS. 9-10 are respectively connected to the circuitsE3 via the wires E, whereby an external circuit can transmit electricalsignals to the coils W via the wires E and the circuits E3. It should benoted since two coils W are provided on the bottom side of the springsheet S, the magnetic force for driving the stage S3 to rotate can beincreased, and the range of depth sensing or 3D scanning can also beincreased.

FIGS. 11 and 12 are exploded and perspective diagrams of a light emitterD3, a light receiver D4, and a substrate I disposed on a spring sheet S,in accordance with another embodiment of the invention. FIG. 13 is aperspective diagram of an optical system in accordance with anotherembodiment of the invention.

As shown in FIGS. 11-13, this embodiment is different from FIGS. 7-10 inthat a light emitter D3, a light receiver D4, and a substrate I aredisposed on a spring sheet S, and the optical element R1 shown in FIGS.7-10 is omitted from the driving mechanism. FIG. 13 shows that thesubstrate I is disposed on the top side of the spring sheet S, and thelight emitter D3 and the light receiver D4 are disposed on the substrateI, wherein an insulating layer is formed between the substrate I and thespring sheet S. For example, the light emitter D3 and the light receiverD4 may respectively comprise laser diode and photo diode, and thesubstrate I may comprise a circuit board for electrically connecting thelight emitter D3 and the light receiver D4 to an external circuit.

By directly affixing the light emitter D3 and the light receiver D4 tothe spring sheet S, the optical element R1 (e.g. mirror) can be omittedfrom the driving mechanism. Thus, the positioning accuracy duringassembly and the performance of depth sensing or 3D scanning can begreatly increased. Moreover, the production cost and the dimensions ofthe driving mechanism can also be reduced. In some embodiments, only oneof the light emitter D3 and the light receiver D4 is disposed on thespring sheet S, so that the circuits on the substrate I can besimplified.

FIG. 14 is an exploded diagram of a spring sheet S, a coil W, andseveral magnets MX and MY, in accordance with another embodiment of theinvention. FIG. 15 is a perspective diagram showing the spring sheet S,the coil W, and the magnets MX and MY in FIG. 14 assembled to a fixedmember H. FIG. 16 is a perspective diagram showing the relativepositions of the spring sheet S and the magnets MX and MY in FIG. 15.

As shown in FIGS. 14-16, the spring sheet S and the magnets MX and MY inthis embodiment are affixed to the fixed member H, wherein the coil Wcan be integrally formed on the bottom side the spring sheet S bymetallic printing ink or circuit-on-metal technology. Specifically, thespring sheet S has two meandering deformable portions S2. When the coilW is energized by an electrical current signal, the coil W and themagnets MY (first magnets) can produce a first magnetic force drivingthe stage S3 to rotate around a first axis AY, and the coil W and themagnets MX (second magnets) can produce a second magnetic force drivingthe stage S3 to rotate around a second axis AX.

For example, the spring sheet S may have a first resonance frequency anda second resonance frequency with respect to the fixed member H,corresponding to the first and second axes AY and AX. When a first ACcurrent signal and a second AC current signal are sequentially appliedto the coil W in a first time interval and a second time interval, thestage S3 of the spring sheet S can be driven to rotate around the firstand second axes AY and AX to perform depth sensing or 3D scanning of anobject, wherein the frequencies of the first and second AC currentsignals correspond to the first and second resonance frequencies.

In some embodiments, the aforementioned driving mechanism may utilizethe two coils W and the bobbin N in FIGS. 7-10 with the circuits E3 andwires E (FIGS. 8-10). Thus, two different current signals can beindividually applied to the two coils W, to drive the stage S3 and theoptical element R1 (e.g. mirror) on the stage S3 to rotate around thefirst axis AY and the second axis AX at the same time. Here, the secondresonance frequency could be over 10 times the first resonancefrequency.

As shown in FIG. 16, four magnets MX and two magnets MY are provided inthe driving mechanism, wherein the stage S3 and the magnets MY overlapwhen viewed in the X direction, and the stage S3 and the magnets MXoverlap when viewed in the Y direction. Therefore, the stage S3 and theoptical element R1 thereon can be driven to rotate around the first axisAY and the second axis AX at the same time by the coil W and the magnetsMY and MX (driving assembly), thus greatly increasing the range of depthsensing or 3D scanning.

FIG. 17 is a perspective diagram showing the relative positions of aspring sheet S, at least one coil W, and several magnets M, inaccordance with another embodiment of the invention. As shown in FIG.17, the spring sheet S in this embodiment has four fixed ends S1 affixedto the fixed part (the fixed member H and the base B), a stage S3 forcarrying the optical element R1, and four deformable portions S2connecting the four fixed ends S1 to the stage S3. Additionally, fourmagnets M are affixed to the fixed part, and at least one coil W isaffixed to the stage S3. When an electrical current signal is applied tothe coil W, a magnetic force can be produced to rotate the stage S3 backand forth within a range relative to the fixed part. Here, the springsheet S can define a rectangular area, and the four fixed ends S1 of thespring sheet S are located at the four corners of the rectangular area.

Referring to FIGS. 18 and 19, FIG. 18 is a perspective diagram of adriving mechanism in accordance with an embodiment of the invention, andFIG. 19 is a perspective diagram of the two spring sheets S in FIG. 18.

As shown in FIGS. 18 and 19, this embodiment is different from FIGS. 1-2in that the movable part includes two spring sheets S. Each of thespring sheet S that has a fixed end S1 secured on the fixed member H, adeformable portion S2, and a stage S3 for carrying the optical elementR1.

In this embodiment, the stages S3 of the two spring sheets S are spacedapart from each other, and a bobbin N and two coils W are disposed onthe bottom sides of the stages S3. Here, the bobbin N is affixed to thestages S3, and the coils W are wound on the bobbin N.

In some embodiments, several circuits such as the circuits E3 in FIG. 9may be integrally formed on the stages S3 by metallic printing ink orcircuit-on-metal technology to electrically connect to the two coils W.

FIG. 20 is a perspective diagram of a spring sheet S in accordance withanother embodiment of the invention. Referring to FIG. 20, the movablepart may comprise only one spring sheet S, and two sets of circuits E3are integrally formed on the stages S3 of the spring sheet S by metallicprinting ink or circuit-on-metal technology. It should be noted that thetwo sets of circuits E3 can be electrically connected to the two coilsW, respectively. Moreover, an insulating layer K is formed between thecircuits E3 and the spring sheet S to prevent short circuittherebetween.

FIG. 21 is a partial sectional view showing a coil Y21 and a circuit Y31formed on the same side of the spring sheet S. As shown in FIG. 21, amulti-layer circuit structure can be formed on a surface of the springsheet S to replace the bobbin N and the coil W in FIG. 18.

In some embodiments, the coil Y21 and the circuit Y31 can be formed andstacked on the top side of the spring sheet S by metallic printing inkor circuit-on-metal technology, wherein the coil Y21 is located betweenthe circuit Y31 and the spring sheet S. Moreover, an insulating layerY10 is formed between the coil Y21 and the spring sheet S, and twoinsulating structures Y20 and Y30 are formed around the coil Y21 and thecircuit Y31 to prevent short circuit therebetween.

FIG. 22 is a partial sectional view showing a coil Y21 and a circuit Y31formed on the opposite sides of the spring sheet S. As shown in FIG. 22,this embodiment is different from FIG. 21 in that the coil Y21 and thecircuit Y31 are formed on the opposite sides of the spring sheet S,wherein an insulating layer Y10 is formed between the coil Y21 and thespring sheet S, and another layer Y10 is formed between the circuit Y31and the spring sheet S. Thus, a multi-layer circuit structure can beformed on the spring sheet S to greatly reduce production cost and thethickness of the driving mechanism.

FIGS. 23 and 24 are partial perspective view and top view of a drivingmechanism in accordance with another embodiment of the invention.Referring to FIGS. 23 and 24, two spring sheet S are used as the movablepart of the driving mechanism for sustaining a round optical element R1.Moreover, a bobbin N and at least one coil W are affixed to the bottomside of the two spring sheet S, wherein the coil W is wound on thebobbin N.

In this embodiment, the bobbin N has a plurality of pins J (positioningstructures), and at least one of the pins J extends through andprotrudes from the top surface of the spring sheet S to contact andrestrict the optical element R1 in a predetermined position, as shown inFIGS. 23 and 24.

It should be noted that the driving mechanism may further include acover (not shown) to protect the spring sheets S and the optical elementR1, and the stage S3 of the spring sheet S forms a protrusion S31(positioning structure) protruding form a side of the spring sheet S, soas to restrict the cover can in a recess S32 adjacent to the protrusionS31. In this embodiment, each spring sheet S forms two protrusions S31that are symmetrical to the deformable portion S2, and the two recessesS32 are formed between the two protrusions S31 and the deformableportion S2.

The spring sheet S in this embodiment forms at least one flat surfaceS33 (positioning structure) to contact and restrict the magnet M in apredetermined position in the X direction. Additionally, to enhance theconnection strength between the spring sheet S and the bobbin N, thespring sheet S forms a bent portion S34 (FIG. 23) bent toward the bobbinN, whereby the adhesion area between the spring sheet S and the bobbin Ncan be efficiently increased to prevent the bobbin N being separatedfrom the spring sheet S.

FIG. 25 is a perspective diagram of a cover T in accordance with anotherembodiment of the invention, and FIG. 26 is a partial sectional view ofthe cover T in FIG. 25, a fixed member H connected to the cover T, andtwo magnets M received in the cover T after assembly.

Referring to FIGS. 25 and 26, the cover T in this embodiment is mountedto the fixed member H to protect the components therein. The cover Tforms an opening T0, a plurality of pillars T1, and a plurality ofprotrusions T2, wherein the pillars T1 and the protrusions T2 are formedon the inner side of the cover T and extend in the −Z direction(vertical direction).

During assembly, each of the magnets M can be positioned in a space T11(FIG. 25) between two of the pillars T1, and the pillars T1 can restrictthe magnets M to move in the Y direction (horizontal direction).Moreover, as shown in FIG. 26, the protrusions T2 on the inner side ofthe cover T can contact the magnets M in the −Z direction (verticaldirection), so that the magnets M can be restricted in a predeterminedposition to prevent the magnets M being separated from the fixed memberH.

Still referring to FIG. 26, two magnetic permeable sheets Q may beembedded in the plastic fixed member H by insert molding. As themagnetic permeable sheets Q are located close to the magnets M, themagnets M can be rapidly and automatically attached to the surface ofthe fixed member H by magnetic attraction between the magnets M and themagnetic permeable sheets Q. Therefore, high positioning accuracy andefficient assembly of the driving mechanism can be achieved.

Referring to FIGS. 27 and 28, FIG. 27 is a perspective diagram of anoptical sensing system in accordance with an embodiment of theinvention, and FIG. 28 is a perspective diagram of the optical module SMthat changes the propagation direction of the sensing light L1 in FIG.27.

As shown in FIGS. 27 and 28, the optical sensing system primarilycomprises a light emitter TX, a light receiver RX, an optical module SM,and a focusing lens FL. The optical module SM includes a light pathadjusting element PR and an optical element R1 (FIG. 28). The opticalelement R1 and the light path adjusting element PR can be driven torespectively rotate around a first axis A1 and a second axis A2 within arange by a driving assembly (e.g. magnets and coils), so as to performdepth sensing or 3D scanning of an object O.

Still referring to FIGS. 27 and 28, the light emitter TX can emit asensing light L1 to the optical module SM, and the light path adjustingelement PR and the optical element R1 of the optical module SM canredirect the sensing light L1 to the object O. Subsequently, the sensinglight L1 is reflected by the object O and propagates through thefocusing lens FL to the light receiver RX. In this embodiment, the lightreceiver RX can transfer light into an electrical signal and thentransmit the electrical signal to a processor (not shown), so that 3Dsurface and depth information of the object O can be obtained.

The optical element R1 in FIG. 28 is disposed on a stage S3 of thespring sheet S. The spring sheet S may comprise a round, oval orrectangular mirror, and any one of the driving mechanisms as disclosedin FIGS. 1-26 may be applied to the spring sheet S, so that the springsheet S can be driven to rotate around a first axis A1 within a firstrange. Additionally, the light path adjusting element PR may comprise aprism that is movably connected to a fixed part (e.g. the base B and thefixed member H in FIGS. 1-2), and it can rotate around a second axis A2relative to the fixed part, wherein the second axis A2 is not parallelto the first axis A1. Here, the second axis A2 is perpendicular to thefirst axis A1.

In this embodiment, the sensing light L1 emitted from the light emitterTX propagates in an initial direction to the light path adjustingelement PR, and the light path adjusting element PR redirects thesensing light L1 to propagate in an incident direction to the opticalelement R1 on the spring sheet S. Subsequently, the sensing light L1 isreflected by the optical element R1 to propagate in a reflectingdirection and then reach the object O (FIG. 27). Here, the first axis A1is perpendicular to the incident direction and the reflecting direction,and the second axis A2 is perpendicular to the initial direction and theincident direction.

It should be noted that the optical element R1 and the light pathadjusting element PR can respectively rotate around the first and secondaxes A1 and A2 back and forth for depth sensing or 3D scanning a surfaceof the object O. In some embodiments, the optical element R1 and thestage S3 of the spring sheet S may be driven to rotate around the firstaxis A1 back and forth within a first range by open-loop control, andthe light path adjusting element PR may be driven to rotate around thesecond axis A2 within a second range by closed-loop control.

In some embodiments, the spring sheet S has a first resonance frequencyrelative to the fixed part, and a first AC current signal can be appliedto the coil of the driving assembly, thus driving the stage S3 to rotatearound the first axis A1 back and forth within the first range.Additionally, the light path adjusting element PR may be driven torotate around the second axis A2 by a voice coil motor (VCM).

FIG. 29 is a perspective diagram of the sensing light L1 reflected bythe optical element R1 to the object O while the light path adjustingelement PR rotates around the second axis A2. FIG. 30 is a perspectivediagram showing the optical element R1 continuously rotates around thefirst axis A1 back and forth within a first range RA1, and the lightpath adjusting element PR rotates around the second axis A2 within asecond range RA2 in a stepwise manner.

As shown in FIG. 29, when the light path adjusting element PR rotatesaround the second axis A2, the sensing light L1 can scan through afan-shaped area. Since the stage S3 of the spring sheet S can alsorotate around the first axis A1 back and forth, the sensing light L1 canreach a specific surface area on the object O for depth sensing of 3Dscanning.

Referring to FIG. 30, the optical element R1 and the stage S3 of thespring sheet S are driven to continuously rotate around the first axisA1 back and forth within the first range RA1. However, the light pathadjusting element PR is driven to rotate in a stepwise manner around thesecond axis A2 within the second range RA2, different from the opticalelement R1 and the spring sheet S.

It should be noted that after the light path adjusting element PRrotates a first step angle SP1 in a predetermined direction around thesecond axis A2 from an initial position IP, the light path adjustingelement PR stops rotating around the second axis A2 temporarily. Thelight path adjusting element PR will rotate a second step angle SP2again in the predetermined direction around the second axis A2 after theoptical element R1 and the stage S3 of the spring sheet S rotatesthroughout the first range RA1.

Furthermore, after the light path adjusting element PR rotates thesecond step angle SP2 around the second axis A2, the light pathadjusting element PR stops rotating around the second axis A2temporarily. Again, the light path adjusting element PR will rotate athird step angle SP3 around the second axis A2 after the optical elementR1 and the stage S3 of the spring sheet S rotates throughout the firstrange RA1, and so on. With the optical element R1 and the light pathadjusting element PR respectively rotating around the first and secondaxes A1 and A2, the sensing light L1 can be projected onto a surfacearea on the object O for depth sensing of 3D scanning.

FIG. 31 is a perspective diagram of an upper module of a drivingmechanism in accordance with an embodiment of the invention. FIG. 32 isan exploded diagram of the spring sheet S, the coils W, and the bobbin Nin FIG. 31.

Referring to FIG. 31, the upper module in this embodiment is differentfrom FIGS. 1-2 in that the longitudinal spring sheet S has two curvedportions S21 and two bridge portions S22. The curved portions S21respectively connects the deformable portions S2 to the round stage S3,and an opening is formed between the curved portions S21 and two bridgeportions S22.

FIG. 31 also shows that an optical element R1 and two coils W arerespectively disposed on the top side and bottom side of the stage S3.In this embodiment, two magnets M are arranged along the diagonaldirection of the spring sheet S, and they have the same polardirections.

Additionally, FIG. 32 shows the bobbin N and two coils W (as disclosedin FIGS. 7-10) are disposed on the bottom side of the stage S3. Here,the spring sheet S has a first resonance frequency and a secondresonance frequency with respect to the fixed part. A first AC currentsignal can be applied to the coils W in a first time interval, and asecond AC current signal can be applied to the coils W in a second timeinterval. Thus, the stage S3 can be driven to rotate back and fortharound the long axis AL and the short axis AS of the spring sheet S indifferent time periods.

However, in some embodiments, the two coils W can also be energized bythe first and second AC current signals at the same time. Thus, thestage S3 can be driven to rotate back and forth around the long axis ALand the short axis AS of the spring sheet S at the same time, whereinthe long axis AL is perpendicular to the short axis AS. For example, thefirst resonance frequency is from 10 Hz to 30 Hz, and the secondresonance frequency is from 300 Hz to 1000 Hz, wherein the secondresonance frequency may be over 10 times the first resonance frequency.

In some embodiments, the bobbin N can also be replaced by the multiplecircuit structure as disclosed in FIGS. 21 and 22, wherein the coil orthe circuit may be integrally formed on top or bottom side of the springsheet S by metallic printing ink or circuit-on-metal technology. Whenthe coil is energized by a current signal, the stage S3 of the springsheet S can rotate around the long axis AL or the short axis AS. In someembodiments, the circuit may be connected to a position sensor (e.g.Hall effect sensor) to obtain the posture angle of the stage S3 and theoptical element R1.

FIG. 33 is a perspective diagram of a sensing module U and an analyzingdevice V, and FIG. 34 is a perspective diagram showing the sensingmodule U when connected to the analyzing device V.

Referring to FIGS. 33 and 34, the sensing module U in this embodimenthas a sensing film F. The sensing film F may comprise porous material toadsorb a specimen. To detect some specific substance in the specimen,the sensing module U can be inserted into a slot V0 on a side of theanalyzing device V, so that the sensing module U and the analyzingdevice V are electrically connected to each other. Subsequently, a lightsource in the analyzing device V can project light onto the sensingmodule U for obtaining concentration or quantity information of thesubstance in the specimen.

In some embodiments, the sensing module U may comprise disposablematerial and is detachably connected to the analyzing device V. Hence,it could be easy to use and especially suitable in the field ofpoint-of-care testing (POCT).

FIG. 35 is a perspective diagram of an optical sensing system inaccordance with an embodiment of the invention. As shown in FIG. 35,when the sensing module U and the analyzing device V are connected toeach other, a light emitter D5 can emit a sensing light L to a firstoptical coupler PM1 of the sensing module U, and the sensing light Lthen enters a light guide element WG under the first optical couplerPM1. Subsequently, the sensing light L is reflected multiple timeswithin the light guide element WG and propagates into a second opticalcoupler PM2. A light receiver D6 in the analyzing device V finallyreceive the sensing light L and transfer the sensing light L into anelectrical signal.

It should be noted that the light receiver D6 can transmit sensing datato a processing unit (not shown) in the analyzing device V according tothe sensing light L. The processing unit compares the sensing data withreference data in a memory unit and then transmits an image signal tothe display V1. In this embodiment, the sensing data includes intensityor phase information of the sensing light L.

The light emitter D5, the light receiver D6, and the sensing module Ucan constitute an optical system, wherein the sensing module U has ahollow housing U1 and a substrate SB disposed in the housing U1. Thelight guide element WG is disposed on the substrate SN, and the sensingfilm F, the first optical coupler PM1, and the second optical couplerPM2 are all disposed on a top surface of the light guide element WG.

In some embodiments, the light guide element WG may be an opticalwaveguide (OWG) that comprises polymer resin, and the substrate SB maycomprise quartz or glass. The light emitter D5 may comprise an LED orLD, the light receiver D6 may comprise photodiode, and the sensing lightL may be laser or general light. Additionally, the first and secondoptical couplers PM1 and PM2 may comprise prisms or other opticallenses, and the sensing film F is located between the first and secondoptical couplers PM1 and PM2.

As mentioned above, when the sensing light L propagates through thefirst optical coupler PM1 into the light guide element WG, the sensinglight L is reflected multiple times inside the light guide element WG,and an evanescent wave of the sensing light L can cause Surface PlasmonResonance (SPR) between the light guide element WG and the sensing filmF. As a result, the specific substance in the specimen that is attachedto the sensing film F (or the reaction product generated by the specificsubstance and the sensing film F) can absorb the energy of the sensinglight L or cause phase variation of the sensing light L.

Hence, the intensity or phase of the sensing light L received by thelight receiver D6 would be different from the sensing light L generatedby the light emitter D5, whereby the concentration or quantity of thespecific substance in the specimen can be determined. For example, thespecific substance may comprise glucose or anti-allergen antibody.

Specifically, to compensate the positioning error between the lightemitter D5 and the first optical coupler PM1, a driving mechanism DM1 inthe analyzing device V is provided and connected to the light emitterD5. The driving mechanism DM1 can drive the light emitter D5 to rotaterelative to the sensing module U, to ensure the sensing light L emittedby the light emitter D5 can successfully and efficiently propagatethrough the first optical coupler PM1 to the light guide element WG.

Similarly, another driving mechanism DM2 in this embodiment is providedand connected to the light receiver D6 for driving the light receiver D6to rotate relative to the sensing module U, thus ensuring the sensinglight L that propagates through the second optical coupler PM2 canefficiently and successfully reach the light receiver D6.

For example, the driving mechanisms DM1 and DM2 may comprise a voicecoil motor (VCM) that applies the configuration of the drivingmechanisms as disclosed in FIGS. 1-32, so that the angle of the lightemitter D5 and the light receiver D6 can be appropriately adjusted toimprove the efficiency of the optical sensing system.

FIG. 36 is a perspective diagram of an optical sensing system inaccordance with another embodiment of the invention. As shown in FIG.36, this embodiment is different from FIG. 35 in that a first light pathadjusting element RM1 and a second light path adjusting element RM2 areprovided in the analyzing device V to guide the sensing light L into/outof the sensing module U.

As shown in FIG. 36, the light emitter D5 emits the sensing light L tothe first light path adjusting element RM1, and the first light pathadjusting element RM1 redirects the sensing light L to propagate throughthe first optical coupler PM1 and into the light guide element WG.Subsequently, the sensing light L propagates through the light guideelement WG and the second optical coupler PM2 to the second light pathadjusting element RM2, and the second light path adjusting element RM2guides the sensing light L to the light receiver D6.

In some embodiments, the light emitter D5 and the first optical couplerPM1 (or the light receiver D6 and the second light path adjustingelement RM2, or the light emitter D5, the light receiver D6 and thefirst and second light path adjusting element RM1 and RM2) are arrangedin a direction parallel to the light guide element WG forminiaturization of the optical sensing system.

In some embodiments, the first and second light path adjusting elementRM1 and RM2 may comprise a prism or mirror that has a curved surface,and they may apply the configuration of the driving mechanisms asdisclosed in FIGS. 1-32, so that they can be appropriately driven torotate and efficiently guide the sensing light L to the light receiverD6.

FIG. 37 is a perspective diagram of an optical sensing system inaccordance with another embodiment of the invention. As shown in FIG.37, this embodiment is different from FIG. 35 in that the first andsecond optical couplers PM1 and PM2 are omitted from the optical sensingsystem. Here, the light emitter D5 and the light receiver D6 aredirectly disposed on the top surface of the light guide element WG. Insome embodiments, the light receiver D6 may have a thickness larger thanthe light emitter D5 to efficiently receive the sensing light L andfacilitate miniaturization of the optical sensing system.

For example, the light emitter D5 may comprise OLED, and the lightreceiver D6 may comprise organic photodiodes (OPD), and both of them aredirectly formed on the top surface of the light guide element WG by acoating process. Thus, the sensing light L can directly enters the lightguide element WG and prevent the positioning error between the lightemitter D5 and the light guide element WG. In some embodiments, a middlelayer (not shown) may be formed between the light guide element WG andthe light receiver D6, wherein the middle layer comprises a refractiveindex greater than the light guide element WG or ranged between thelight guide element WG and the light receiver D6. In some embodiments,the middle layer may be integrally formed with the light receiver D6 inone piece.

FIG. 38 is a perspective diagram showing the sensing light L propagatesfrom the light emitter D5 through the sensing module U to the lightreceiver D6. FIG. 39 is a perspective diagram showing the light emitterD5 is rotatable relative to the sensing module U. FIG. 40 is aperspective diagram showing the light emitter D5 and the light receiverD6 are both rotatable relative to the sensing module U.

As shown in FIG. 38, the sensing light L is emitted from the lightemitter D5 through the sensing module U to the light receiver D6,wherein the light emitter D5 and the light receiver D6 may be disposedinside the analyzing device V or directly affixed to the light guideelement WG of the sensing module U (FIG. 37).

As shown in FIG. 39, the light emitter D5 may be rotatable relative tothe sensing module U by applying the driving mechanism DM1 in FIGS. 35and 36, so that the sensing light L can be successfully and efficientlyguided into the light guide element WG. In some embodiments, as shown inFIG. 40, b the light emitter D5 and the light receiver D6 are bothrotatable relative to the sensing module U by applying the drivingmechanisms DM1 and DM2 in FIGS. 35 and 36, so that the light receiver D6can efficiently receive the sensing light L.

FIG. 41 is a perspective diagram showing the light emitter D5 and thesensing module U are rotatable relative to the light receiver D6. FIG.42 is a perspective diagram showing the light receiver D6 and thesensing module U are rotatable relative to the light emitter D5.

As shown in FIG. 41, the light emitter D5 may be affixed to the sensingmodule U, and they can both rotate relative to the light receiver D6 byapplying the driving mechanisms as disclosed in FIGS. 1-32, so thatlight receiver D6 can efficiently receive the sensing light L.

Similarly, as shown in FIG. 42, the light receiver D6 may be affixed tothe sensing module U, and they can both rotate relative to the lightemitter D5 by applying the driving mechanisms as disclosed in FIGS.1-32, so that the sensing light L can be successfully and efficientlyguided to the sensing module U.

FIG. 43 is a perspective diagram showing the first light path adjustingelement RM1 is rotatable relative to the sensing module U. FIG. 44 is aperspective diagram showing the first and second light path adjustingelements RM1 and RM2 are both rotatable relative to the sensing moduleU.

As shown in FIG. 43, the first light path adjusting element RM1 may bedisposed in the analyzing device V for guiding the sensing light L tothe sensing module U (FIG. 36). Specifically, the first light pathadjusting element RM1 can rotate relative to the sensing module U or thelight emitter D5.

Similarly, as shown in FIG. 44, the second light path adjusting elementRM2 may also be disposed in the analyzing device V for guiding thesensing light L to the light receiver D6, so that the light receiver D6can efficiently receive the sensing light L.

It should be noted that the sensing module U may comprise disposablematerial and is detachably connected to the analyzing device V. Hence,it could be easy to use and especially suitable in the field ofpoint-of-care testing (POCT).

FIG. 45 is a schematic diagram of an optical member driving mechanism100, and FIG. 46 is an exploded-view diagram of the optical memberdriving mechanism 100. The optical member driving mechanism 100 can bemounted in a vehicle (such as a car or a motorcycle) or a portabledevice (such as a smart phone or a tablet computer), and can beelectrically connected to a processer (not shown). The optical memberdriving mechanism 100 can emit light toward an object, and receive thelight reflected by the object. The processor can calculate the profileof the object according to the time lag between emitting and receiving,or the data of luminous intensity of the received light.

As shown in FIGS. 45 and 46, the optical member driving mechanism 100primarily includes a light emitter 110, a light receiver 120, and arotation module 130, wherein the light emitter 110 and the lightreceiver 120 are disposed on the rotation module 130. The light emitter110 emits light toward a direction away from the optical member drivingmechanism 100 at a side 101 of the optical member driving mechanism 100,and the light receiver 120 receives the same type light being emittedtoward the optical member driving mechanism 100 at the same side 101.For example, the light can be an infrared light, a white light, or alaser.

The rotation module 130 includes a fixed portion 131, a movable portion132, and a driving assembly 133. The fixed portion 131 can be a base,and the movable portion 132 can be a carrier. The movable portion 132 ismovably connected to the fixed portion 131.

As shown in FIGS. 46 and 47, in this embodiment, the movable portion 132has a metal substrate 1321, an insulation layer 1322, and a wire layer1323. The insulation layer 1322 is disposed between the metal substrateand the wire layer 1323. The light emitter 110 and the light receiver120 are disposed on the insulation layer 1322 and electrically connectedto the wire layer 1323.

In this embodiment, the metal substrate 1321 is constituted by aflexible sheet spring, including at least one first engaged section1321A, at least one second engaged section 1321B, and at least onestring section 1321C. The first engaged section 1321A is affixed to thefixed portion 131, the insulation layer 1322 is disposed on the secondengaged section 1321B, and the string section 1321C connects the firstengaged section 1321A to the second engaged section 1321B. Therefore,the light emitter 110 and the light receiver 120 can be suspended on thefixed portion 131 by the metal substrate 1321 of the movable portion132.

The driving assembly 133 includes at least one first electromagneticdriving member 1331, at least one second electromagnetic driving member1332, and at least one magnetic permeability member 1333. The firstelectromagnetic driving member 1331 is disposed on the fixed portion131. The second electromagnetic driving member 1332 is disposed on themovable portion and corresponds to the first electromagnetic drivingmember 1331. The second engaged section 1321B can be driven to moverelative to the fixed portion 131 by the first electromagnetic drivingmember 1331 and the second electromagnetic driving member 1332.

In detail, in this embodiment, the first electromagnetic member 1331 isa magnet, and the second electromagnetic member 1332 is a coil. When acurrent flows through the second electromagnetic member 1332, anelectromagnetic effect is generated between the first electromagneticdriving member 1331 and the second electromagnetic member 1332, and thesecond engaged section 1321B is driven to rotate around a first rotationaxis 11 relative to the fixed portion 131.

The magnetic permeability member 1333 is adjacent to the firstelectromagnetic member 1331 to enhance the magnetic pushing force. Insome embodiments, the first electromagnetic member 1331 is a coil, andthe second electromagnetic member 1332 is a magnet.

Since the light emitter 110 and the light receiver 120 are disposed onthe second engaged section 1321B, when the second engaged section 1321Bis driven to rotate, the light emitter 110 and the light receiver 120rotate simultaneously. Therefore, the scanning range of the opticalmember driving mechanism 100 can be increased, and the situation thatthe reflected light cannot be received by the light receiver 120 due tothe position can be reduced.

In this embodiment, the insulation layer 1322 and the secondelectromagnetic driving member 1332 are respectively disposed onopposite sides of the metal substrate 1321. Furthermore, the lightemitter 110 and the light receiver 120 are arranged along the firstrotation axis 11, so that the first rotation axis 11 passes through thelight emitter 110 and the light receiver 120. In some embodiments, thelight emitter 110 and the light receiver 120 are respectively disposedon the different sides of the first rotation axis 11, and the distancebetween the light emitter 110 and the first rotation axis 11 issubstantially the same as the distance between the light receiver 120and the first rotation axis 11.

Referring to FIGS. 48 and 49, in another embodiment, an optical memberdriving mechanism 200 primarily includes a light emitter 210, a lightreceiver 220, and a rotation module. The light emitter 210 and the lightreceiver 220 are disposed on the rotation module 230, and the rotationmodule 230 can drive the light emitter 210 and the light receiver 220 torotate around a first rotation axis 21 and a second rotation axis 22,wherein the first rotation axis 21 is perpendicular to the secondrotation axis 22.

The rotation module 230 includes a fixed portion 231, a movable portion232, and a driving assembly 233. The fixed portion 231 includes a base2311 and a frame 2312. The base 2311 is fixedly joined to the frame2312. The movable portion 232 includes a supporting member 2321 and acarrier 2322. The movable portion 232 is movably connected to the fixedportion 231.

Referring to FIGS. 49-51, in this embodiment, the carrier 2322 has ametal substrate 2324, an insulation layer 2325, and a wire layer 2326.The insulation layer 2325 is disposed between the metal substrate 2324and the wire layer 2326. The light emitter 210 and the light receiver220 are disposed on the insulation layer 2325 and electrically connectedto the wire layer 2326.

In this embodiment, the metal substrate 2324 is constituted by aflexible sheet spring, including at least one first engaged section2324A, at least one second engaged section 2324B, and at least onestring section 2324C. The first engaged section 2324A is affixed to theframe 2312, the insulation layer 2325 is disposed on the second engagedsection 2324B, and the string section 2324C connects the first engagedsection 2324A to the second engaged section 2324B. Therefore, the lightemitter 210 and the light receiver 220 can be suspended on the fixedportion 231 by the metal substrate 2324 of the movable portion 232.

The supporting member 2321 is connected to the second engaged section2324B, and the second engaged section 2324B is disposed between thesupporting member 2321 and the insulation layer 2325. The drivingassembly 233 includes at least one first electromagnetic driving member2331A, at least one first electromagnetic driving member 2331B, at leastone second electromagnetic driving member 2332A, at least one secondelectromagnetic driving member 2332B, and a circuit board 2333. Thefirst electromagnetic driving members 2331A and 2331B are affixed to thesupporting member 2321, and respectively disposed on the differentsurfaces of the supporting member 2321. The circuit board 2333 isclamped between the base 2311 and the frame 2312. The secondelectromagnetic driving members 2332A and 2332B are disposed on thecircuit board 2333, and respectively corresponds the firstelectromagnetic driving members 2331A and 2331B through the openings2313 of the frame 2312. The second engaged section 2324B can be drivento move relative to the fixed portion 231 by the first electromagneticdriving members 2331A and 2331B and the second electromagnetic drivingmembers 2332A and 2332B.

In detail, in this embodiment, the first electromagnetic members 2331Aand 2331B are magnets, and the second electromagnetic members 2332A and2332B are coils. When a current flows through the second electromagneticmember 2332A, an electromagnetic effect is generated between the firstelectromagnetic driving member 2331A and the second electromagneticmember 2332A, and the second engaged section 2324B is driven to rotatearound the first rotation axis 21 relative to the fixed portion 231.When a current flows through the second electromagnetic member 2332B, anelectromagnetic effect is generated between the first electromagneticdriving member 2331B and the second electromagnetic member 2332B, andthe second engaged section 2324B is driven to rotate around the secondrotation axis 22 relative to the fixed portion 231.

In some embodiments, the first electromagnetic driving members 2331A and2331B are coils, and the second electromagnetic members 2332A and 2332Bare magnets.

Since the light emitter 210 and the light receiver 220 are disposed onthe second engaged section 2324B, when the second engaged section 2324Bis driven to rotate, the light emitter 210 and the light receiver 220rotate simultaneously. Therefore, the scanning range of the opticalmember driving mechanism 200 can be increased, and the situation thatthe reflected light cannot be received by the light receiver 220 due tothe position can be reduced.

The light emitter 210 and the light receiver 220 are arranged along thefirst rotation axis 21, so that the first rotation axis 21 passesthrough the light emitter 210 and the light receiver 220. Moreover, thelight emitter 210 and the light receiver 220 are respectively disposedon the different sides of the second rotation axis 22, and the distancebetween the light emitter 210 and the second rotation axis 22 issubstantially the same as the distance between the light receiver 220and the second rotation axis 22.

Referring to FIG. 52, in another embodiment, an optical member drivingmechanism 300 primarily includes two light emitters 310, a lightreceiver 320, and a rotation module 330, wherein the structure of therotation module 330 is the same as that of the rotation module 230, sothat the features thereof are not repeated in the interest of brevity.The light receiver 320 is disposed on the movable portion 332 of therotation module 330, and two light emitters 310 are disposed on oppositesides of the light receiver 320. Owing to the rotation of the lightreceiver 320, the scanning range of the optical member driving mechanism300 can be increased. Furthermore, since the light receiver 320 canreceive the reflected lights from two light emitters 310, the profile ofthe object can be accurately calculated.

Referring to FIG. 53, in another embodiment, an optical member drivingmechanism 400 primarily includes a light emitter 410, two lightreceivers 420, and a rotation module 430, wherein the structure of therotation module 430 is the same as that of the rotation module 230, sothat the features thereof are not repeated in the interest of brevity.The light emitter 410 is disposed on the movable portion 432 of therotation module 430, and two light receivers 420 are disposed onopposite sides of the light emitter 410. The light receiving ranges oftwo light receivers 420 can be overlapped. Owing to the rotation of thelight emitter 410, the scanning range of the optical member drivingmechanism 400 can be increased.

Referring to FIG. 54, in another embodiment, an optical member drivingmechanism 500 primarily includes a light emitter 510, two lightreceivers 520, a rotation module 530, and a reflecting member 540,wherein the structure of the rotation module 530 is the same as that ofthe rotation module 230, so that the features thereof are not repeatedin the interest of brevity.

The reflecting member 540 can be a mirror or a prism, and can bedisposed on the rotation module 530. The light emitter 510 emits light1000 toward the reflecting member 540. After being reflected by thereflecting member 540, the light 1000 moves toward the object in aparticular direction 1001. Two light receivers 520 are disposed onopposite sides of the reflecting member 540. After being reflected bythe object, the light 1000 can be received by two receivers 520.

It should be noted that, as seen from the direction 1001, the lightemitter 510 overlaps one of the light receivers 520, so as to savespace. For example, the optical member driving mechanism 500 in thisembodiment can be used in the vehicle, so as to save space between tworeceivers 520 to dispose other components.

Referring to FIG. 55, in another embodiment, an optical member drivingmechanism 600 primarily includes a light emitter 610, a light receiver620, a rotation module 630, and a reflecting member 640, wherein thestructure of the rotation module 630 is the same as that of the rotationmodule 230, so that the features thereof are not repeated in theinterest of brevity.

The reflecting member 640 can be a mirror or a prism, and can bedisposed on the rotation module 630. The light emitter 610 emits light1000 toward the reflecting member 640, and the reflecting member 640reflects the light 1000 to the object. After being reflected by theobject, the light 1000 can be received by the receiver 620.

Specifically, the light emitter 610, the reflecting member 640, and thelight receiver 620 are arranged in a straight line 1002, so that thethickness of the optical member driving mechanism 600 can be reduced.The optical member driving mechanism 600 can be used in the portabledevice.

In the aforementioned embodiments, when the light emitter is disposed onthe rotation module, or the light is reflected by the reflecting memberon the rotation module, the light being emitted toward the object maynot shift horizontally due to the rotation. Therefore, as shown in FIG.56, in some embodiments, a light path adjusting member 900 can bedisposed on the rotation module 630 (or the rotation module 230, 330,430 or 530). The light emitter 210 or 410 or the reflecting member 540or 640 can be disposed on the light path adjusting member 900.

Owing to the light path adjusting member 900, the emission direction1001 of the reflected light 1000 can be parallel or perpendicular to thesecond rotation axis 22. The light being emitting toward the object canshift horizontally.

As shown in FIG. 57, in some embodiments, the direction of the magneticpushing force of the driving assembly 233 can be changed to adjust thesecond rotation axis 22. The second rotation axis 22 can be adjusted tobe parallel or perpendicular to the emission direction 1001 of thereflected light 1000, so that the light being emitted toward the objectcan shift horizontally.

In the aforementioned embodiments, the light emitter and the lightreceiver can be a fill light member (such as a flash) and an imagesensor.

In summary, an optical member driving mechanism is provided, including amovable portion, a fixed portion, a driving assembly, at least one lightemitter, and at least one light receiver. The driving assembly isconfigured to drive the movable portion to move relative to the fixedportion. The light emitter emits light toward an object, and the lightreceiver receives the light reflected by the object.

Although some embodiments of the present disclosure and their advantageshave been described in detail, it should be understood that variouschanges, substitutions and alterations can be made herein withoutdeparting from the spirit and scope of the disclosure as defined by theappended claims. For example, it will be readily understood by thoseskilled in the art that many of the features, functions, processes, andmaterials described herein may be varied while remaining within thescope of the present disclosure. Moreover, the scope of the presentapplication is not intended to be limited to the particular embodimentsof the process, machine, manufacture, compositions of matter, means,methods and steps described in the specification. As one of ordinaryskill in the art will readily appreciate from the disclosure of thepresent disclosure, processes, machines, manufacture, compositions ofmatter, means, methods, or steps, presently existing or later to bedeveloped, that perform substantially the same function or achievesubstantially the same result as the corresponding embodiments describedherein may be utilized according to the present disclosure. Accordingly,the appended claims are intended to include within their scope suchprocesses, machines, manufacture, compositions of matter, means,methods, or steps. Moreover, the scope of the appended claims should beaccorded the broadest interpretation so as to encompass all suchmodifications and similar arrangements.

While the invention has been described by way of example and in terms ofpreferred embodiment, it should be understood that the invention is notlimited thereto. On the contrary, it is intended to cover variousmodifications and similar arrangements (as would be apparent to thoseskilled in the art). Therefore, the scope of the appended claims shouldbe accorded the broadest interpretation to encompass all suchmodifications and similar arrangements.

What is claimed is:
 1. A driving mechanism for driving an opticalelement to move, comprising: a fixed part; a movable part, movablyconnected to the fixed part for holding the optical element; and adriving assembly, configured to drive the movable part to move relativeto the fixed part, wherein a sensing light propagates to the opticalelement along an incident direction and leaves the optical element in areflecting direction that is not parallel to the incident direction;wherein the driving assembly drives the movable part to rotate around afirst axis relative to the fixed part, and the first axis isperpendicular to the incident direction and the reflecting direction;wherein the driving assembly has a light path adjusting element, and thesensing light propagates along an initial direction to the light pathadjusting element, wherein the light path adjusting element rotatesaround a second axis relative to the fixed part and guides the sensinglight to propagate along the incident direction to the optical element.2. The driving mechanism as claimed in claim 1, wherein the drivingassembly drives the movable part to rotate around the first axis withina first range.
 3. The driving mechanism as claimed in claim 1, whereinthe optical element comprises a round, oval or rectangular mirror. 4.The driving mechanism as claimed in claim 1, wherein the drivingassembly has a magnetic element and a coil respectively disposed on thefixed part and the movable part for driving the movable part to moverelative to the fixed part.
 5. The driving mechanism as claimed in claim1, wherein the second axis is perpendicular to the initial direction andthe incident direction.
 6. The driving mechanism as claimed in claim 1,wherein the light path adjusting element comprises a prism.
 7. A drivingmechanism for driving an optical element to move, comprising: a fixedpart; a movable part, movably connected to the fixed part for holdingthe optical element; and a driving assembly, configured to drive themovable part to move relative to the fixed part, wherein a sensing lightpropagates to the optical element along an incident direction and leavesthe optical element in a reflecting direction that is not parallel tothe incident direction; wherein the driving assembly drives the movablepart to rotate around the first axis relative to the fixed part, and thefirst axis is perpendicular to the incident direction and the reflectingdirection; wherein the driving assembly has a light path adjustingelement, and the sensing light propagates along an initial direction tothe light path adjusting element, wherein the light path adjustingelement rotates around a second axis within a second range relative tothe fixed part and guides the sensing light to propagate along theincident direction to the optical element.
 8. The driving mechanism asclaimed in claim 7, wherein the movable part rotates back and fortharound the first axis within the first range by open-loop control, andthe light path adjusting element rotates around the second axis withinthe second range by closed-loop control.
 9. The driving mechanism asclaimed in claim 8, wherein the movable part continuously rotates backand forth around the first axis within the first range, and the lightpath adjusting element rotates around the second axis within the secondrange in a stepwise manner.
 10. The driving mechanism as claimed inclaim 9, wherein after the light path adjusting element rotates a stepangle around the second axis in a predetermined direction, the lightpath adjusting element stops rotating around the second axistemporarily, and the light path adjusting element rotates the step angleagain around the second axis in the predetermined direction after themovable part rotates throughout the first range.
 11. The drivingmechanism as claimed in claim 1, wherein the movable part comprises alongitudinal spring sheet that has two fixed ends secured to the fixedpart and a stage for carrying the optical element, and the drivingassembly has two magnetic elements disposed on the fixed part and atleast a coil disposed on the stage for driving the stage to rotate backand forth around a long axis of the spring sheet.
 12. The drivingmechanism as claimed in claim 11, wherein the spring sheet has a firstresonance frequency relative to the fixed part, and a first AC currentsignal is applied to the coil in a first time interval, wherein thefrequency of the first AC current signal corresponds to the firstresonance frequency.
 13. The driving mechanism as claimed in claim 12,wherein the spring sheet further has a second resonance frequencyrelative to the fixed part, and a second AC current signal is applied tothe coil in a second time interval for driving the stage to rotate backand forth around a short axis of the spring sheet, wherein the frequencyof the second AC current signal corresponds to the second resonancefrequency.
 14. The driving mechanism as claimed in claim 11, wherein thespring sheet has a first resonance frequency and a second resonancefrequency with respect to the fixed part, and the driving assemblyfurther has two coils, wherein a first AC current signal and a second ACcurrent signal are respectively applied to the two coils for driving thestage to rotate back and forth around a long axis and a short axis ofthe spring sheet, wherein the frequencies of the first and second ACcurrent signals correspond to the first and second resonancefrequencies.
 15. The driving mechanism as claimed in claim 14, whereinthe second resonance frequency is over 10 times the first resonancefrequency.
 16. The driving mechanism as claimed in claim 14, wherein thefirst resonance frequency is from 10 Hz to 30 Hz, and the secondresonance frequency is from 300 Hz to 1000 Hz.
 17. The driving mechanismas claimed in claim 14, wherein the optical element and the coils arerespectively disposed on a top side and a bottom side of the stage.